MP3 dreams

So, as often happens these days, I woke up after four hours of sleep.  I was tired but not easily falling asleep, so I had my phone play the Madoka soundtrack on shuffle very softly as a relaxation/external focus, this sometimes works.  And it did work this time, I slept a lot more today! (finally!)  But...

The dreams weren't stunningly pleasant, but that's okay, I don't remember them now anyway.  Except: in them, I had an MP3 player, and at some point it was getting annoying, so I'd pause it.  But after while it would start up again, on a new track.  This kept repeating in the dream.  (This also seems familiar, not that I trust deja vu senses when it comes to dreams.)

Then I woke up, and noticed the phone was still playing, of course.  So I'm guessing a weird cycle of "pausing the player" in my dream, and then the real phone starting a new track and my brain noticing the change in sensory input and incorporating that into the dream.